Marking device



FIG. 1 is a front view of a marking device according to the present invention;

FIG. 2 is a side view of the marking device of FIG. 1;

FIG. 3 is a rear view of the marking device of FIG. 1;

FIG. 4 is a top view of the marking device of FIG. 1; and,

FIG. 5 is a bottom view of the marking device of FIG. 1. 

The ornamental design for a marking device, as shown and described. 